Quick introduction to Protocol Converters

Many newcomers to the network do not know the word "protocol converter", but when we talk about the gateway, we all know it. How much do we know about this device? Now let's take a look. Protocol converter is gateway, which enables hosts using different high-level protocols on the communication network to work with each other to complete various distributed applications. It works on the transmission layer or higher. our existing protocol converters are mainly divided into E1/Ethernet series and E1/V.35 series.

A protocol converter is a device that converts an Ethernet signal or V.35 signal to an E1 signal and implements long-distance transmission on the synchronous/quasi-synchronous digital network in the form of an E1 signal. the main purpose is to extend the transmission distance between an Ethernet signal and a V.35 signal. It is a network access device.

In the Wan project, the Protocol converter is a telecommunications terminal device used at both ends of the Wan line. The conversion is actually in the form of physical interfaces. For example, the SDH line of the Telecom is transmitted to the user in the form of optical fiber, then, the optical terminal is converted into a pair of coaxial (BNC). If the wide-area port of the user's router is in the serial port format (for example, V.35), in order to convert the BNC to the serial port, the Protocol converter is required. That is to say, the input of the Protocol converter is a coaxial cable, while the output is a serial port. Therefore, it should be a physical layer protocol ｡

In addition, the Protocol converter generally has a line of physical jumper switch, and its settings (such as the E1 frame format) should be consistent with the telecommunications line. In addition, if the router is considered as a DTE, it is probably a DCE ｡

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